From mboxrd@z Thu Jan 1 00:00:00 1970 From: robert.jarzmik@free.fr (Robert Jarzmik) Date: Fri, 28 Dec 2012 19:28:12 +0100 Subject: [PATCH] ARM: pxa27x: fix ac97 controller warm reset code In-Reply-To: <1356706349-3189-1-git-send-email-mikedunn@newsguy.com> (Mike Dunn's message of "Fri, 28 Dec 2012 06:52:29 -0800") References: <1356706349-3189-1-git-send-email-mikedunn@newsguy.com> Message-ID: <87sj6qrpz7.fsf@free.fr> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Mike Dunn writes: > This patch fixes some code that implements a work-around to a hardware bug in > the ac97 controller on the pxa27x. A bug in the controller's warm reset > functionality requires that the mfp used by the controller as the AC97_RESET_n > line be temporarily reconfigured as a generic output gpio (AF0) and manually > held high for the duration of the warm reset cycle. This is what was done in > the original code, but it was broken long ago by commit > fb1bf8cd13bfa7ed0364ab0d82f717fc020d35f6, which changed the mfp to a GPIO input > instead of a high output. > > Signed-off-by: Mike Dunn Acked-by: Robert Jarzmik As a side note, shouldn't this patch (as the other one on ALSA), once reviewed, be submitted to stable kernel ? Cheers. -- Robert